20939106403392 has 224 divisors, whose sum is σ = 58755426710400. Its totient is φ = 6558488985600.

The previous prime is 20939106403379. The next prime is 20939106403429. The reversal of 20939106403392 is 29330460193902.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9975752359 + ... + 9975754457.

It is an arithmetic number, because the mean of its divisors is an integer number (262301012100).

Almost surely, 2^{20939106403392} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20939106403392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29377713355200).

20939106403392 is an abundant number, since it is smaller than the sum of its proper divisors (37816320307008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20939106403392 is a wasteful number, since it uses less digits than its factorization.

20939106403392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5629 (or 5619 counting only the distinct ones).

The product of its (nonzero) digits is 1889568, while the sum is 51.

The spelling of 20939106403392 in words is "twenty trillion, nine hundred thirty-nine billion, one hundred six million, four hundred three thousand, three hundred ninety-two".